06 help

I have a guy that wants to sell me a 06 ego.. It appears that the solenoid is leaking. It has air leaking out of the front grip screw and down out around the trigger. I don't have the marker so that is the best information I have.

Sounds like they over-tightened the grip screw puncturing the noid. The noids are not really rebuild-able and the parts are getting scarce. If its the front section of the noid you might be able to get a new one for cheaper, the rear section is the expensive part.